Differential gearing.



O. ZACHOW.

DIFFERENTIAL GEABING.

APPLICATION FILED MAY8, 1911.

Patented Apr. 16, 1912.

j dilrerfal u a y UNITED STATES PATENT OFFICE.

OTTO ZACHOW, OF CLINTONVILLE, WISCONSIN, ASSIGNOR TO FOUR WHEEL DRIVEAUTO COMPANY, OF CLINTONVILLE, WISCONSIN, A CORPORATION OF WISCONSIN.

IFFEBENTIAL GEARING.

Specification of Letters Patent.

Patented Apr. 16, 1912.

Application filed May 8, 1911. Serial No. 625,674.

To all whom it may concern:

Be it known that I, Orro Zaonow, a citizen of the UnitedStates,'residing at Clintonville, county of \Vaupaca, and State ofWisconsin, have invented new and useful Improvements in DifferentialGearing, of which the following is a specification.

My invention relates to improvements in locking devices for differentialgearing.

0 The ohject of my invention is to provide means whereby ordinarydifl'erential gearing, such as is usually employed in the transmissionmechanism of automobiles, may be locked in such a inner as to prevent adifferential or inde dent movement of the driven member.

The invention is particularly applicable to the main differential of amotor driven vehicle, wherein the power is applied to all of the wheels,but it may alsobe used on the axle dilferentials, or for varying theaction of differential gearing in other mechanism.

In the following description, reference is had to the accompanyingdrawings, in w h i ch Figure 1. is a side elevation, part inlongitudinal section, of a power transmissionmechanism embodying myinvention. Fig. 2 is a transverse sectional VWW, drawn on line :r aofFig. 1.

Like parts are identified by the same refpart of knu kle joint couplingmember which is provided with a h y i adapted to enter groove 3. herebythe roiarv m nes merit 'ih 1ft -ection 5 may he transmit teal t i j int,the haft st ti n 1. oupling IHt-iH D" ining zamnher wustitotc or isriziillv tUiiHw'tWl with. a o in which incl ose lli. pinions and drivenmembers This casing s provided with s eve members; 12 embracing theshaft sections 5, and with v iiz sleeve members 13 interlock,

(the

ends of the sleeves being notched and shouldered at 14, with a flangednut 10 to hold them together). The members 13 are arranged on the shaftsection end to end with the sleeve members 7 of the knuckle vjointcoupling members 8, and the adjacent ends of these sleeves are provided\\'ll.ll registering notches 15 and 1G in which keys 17 carried by acollar 18, are adapted to fit. When the keys 17 are engaged in bothnotches 15 and 1.6, the sleeve members 13 and 7 are locked together, butby adjusting the collar 18 to carry the keys 1.7 into the notches 16only, the sleeve 7 is permitted to rotate independently of sleeve 13.When these sleeves are looked together on either side of thedifferential gearing, the driving member 1 of the differential isthereby rigidly connected with the sleeve 7 and coupling member onthatside, and independ ent movements of coupling member, or of thedriven gear member 3 are therefore pre vented. Each collar 18 isprovided with an overhanging outer flange, threaded internally andadapted to receive a'nut 20, which is also internally threaded in theopposite direction, and adapted to engage a threaded portion 21 onsleeve 7, so that when the nut is rotated, the collar 18 is movedlongitudinally to couple or uncouple sleeve 7 from sleeve 13.

The differential gearing illustrated may constitute the main or drivingdifferential of a motor driven vehicle in which the power is applied toall the wheels. It will therefore be understood that the transmissionihatts for the front and rear axles may be mnncoted with throutercoupling member- ;5, in which case it will be possible to so lock theroar tor front) wheels, or all the whorls. to thidriving shaft thattheir motion will strictly correspond with that of the engine If theinvention is applied to the mi ditli-rentials. then either or both maybe look-id to the drixing member of the differriuiul. so that novariation from iis speed will be permitted,

What i. claim l The combination with the driving and driven members of aset of ditferential gears, of shaft members rigidly (f JI\li(t3iECl tothe respective driven members of said set. sleeve members rigidlyconnected to the driving member f said set, )OWQK transmitting membersconnected with the shaft members, and means for detachably connectinsaid power transmitting members with t e sleeve members.

2. The combination with the driving and driven members of a set ofdifferential gears, of shaft members rigidly connected to the respectivedriven members of said set, sleeve members rigidly connected to thedriving member of said set, power transmitting members connected withthe shaft members, and means for detachably connecting said powertransmitting members with the sleeve members, said connecting meanscomprising collars engaged in notches in the respective powertransmitting members, and movable longitudinally to also engage innotches in the sleeve members. v

3. The combination with diiferential gearing of shaft sections rigidlconnected with the driven members thereo sleeve members on the shaftsections rigidly connected with the diiferential driving member, andnotched at their outer ends, power transmitting sleeve members spline tothe respective shaft sections and having notches registering with thoseof the first mentioned sleeve members, collars having internal keysengaging in "the notches'of the power transmitting sleeve members, andmovable into the notches of the other sleeve members,

and means for adjusting said collars to move their keys into and out ofthe notches in the first mentioned sleeve members.

4. The combination with difi'erential gearing, of shaft sec ions rigidlyconnected with the driven mem ers thereof, sleeve members on the shaftsections rigidly connected with the differential driving member, andnotched at their onter ends, power transmitting sleeve members splinedto the respective shaft sections and having notches registering withthose of the first mentioned sleeve members, collars having internalkeys engaging in the notches of the power transmit ting sleeve members,and movable into the notches of the other sleeve members, and

means for adjusting said collars to move their keys into and out of thenotches in the first mentioned sleeve members, said collar adjustingmeans comprising a set of flanged nuts having right and left handthreaded engagement with the collars and power transmitting sleevesrespectively.

In testimony whereof I alfix my signature in the presence of twowitnesses.

OTTO ZACHOVV.

